Me and my husband stayed at Ni's apartment for 5 nights. The apartment was exactly as described. Small but efficient and very clean. The bed is very comfy and the access to the pool area and the gym made the stay even better.
The appartmant is very near BTS Chong Nonsi and there are a few "restaurants" or places to eat around here if you want to stay in the neighbourhood. It's also near Banyantree Hotel where you can find Vertigo rooftop bar and have a drink.
Ni was very responsive and I only have good things to say about her and her place. I'll definitely stay here again if I go back to Bangkok.